diff --git a/fhem/CHANGED b/fhem/CHANGED
index 45d30b3be..319b5610b 100644
--- a/fhem/CHANGED
+++ b/fhem/CHANGED
@@ -1,5 +1,6 @@
 # Add changes at the top of the list. Keep it in ASCII, and 80-char wide.
 # Do not insert empty lines here, update check depends on it.
+ - bugfix:  70_BOTVAC: fix missing battery parameters
  - bugfix:  70_BRAVIA: fix command queue stops if upnp service is not available
  - change:  dummy/MQTT2_DEVICE/ZWave: setExtensionsEvent attr (Forum #95581)
  - change:  93_DbLog: add support for Meta.pm and delayed shutdown, attribute
diff --git a/fhem/FHEM/70_BOTVAC.pm b/fhem/FHEM/70_BOTVAC.pm
index 25aa60f12..7a1826df0 100755
--- a/fhem/FHEM/70_BOTVAC.pm
+++ b/fhem/FHEM/70_BOTVAC.pm
@@ -1003,8 +1003,10 @@ sub ReceiveCommand($$$) {
               my $generalInfo = $return->{data};
               if ( ref($generalInfo->{battery}) eq "HASH" ) {
                 my $batteryInfo = $generalInfo->{battery};
-                readingsBulkUpdateIfChanged($hash, "batteryTimeToEmpty",         $batteryInfo->{timeToEmpty});
-                readingsBulkUpdateIfChanged($hash, "batteryTimeToFullCharge",    $batteryInfo->{timeToFullCharge});
+                readingsBulkUpdateIfChanged($hash, "batteryTimeToEmpty",         $batteryInfo->{timeToEmpty})
+                    if (defined($batteryInfo->{timeToEmpty}));
+                readingsBulkUpdateIfChanged($hash, "batteryTimeToFullCharge",    $batteryInfo->{timeToFullCharge})
+                    if (defined($batteryInfo->{timeToFullCharge}));
                 readingsBulkUpdateIfChanged($hash, "batteryTotalCharges",        $batteryInfo->{totalCharges});
                 readingsBulkUpdateIfChanged($hash, "batteryManufacturingDate",   $batteryInfo->{manufacturingDate});
                 readingsBulkUpdateIfChanged($hash, "batteryAuthorizationStatus", GetAuthStatusText($batteryInfo->{authorizationStatus}));